UPDATE #3 05/05/14 7.50pm: Naughty Dog has released a trailer for its Reclaimed Territories multiplayer DLC due on Wednesday. It shows off the add-on's four new maps and a smattering of new weapons. Check it out.
UPDATE #2 25/4/14 13.20pm: Naughty Dog has now dated The Last of Us' final add-on pack, the Grounded Bundle, for launch during "the week of 5th May".
That will likely mean Tuesday 6th May in North America and Wednesday 7th May in Europe, when each region's PlayStation Store updates.
The pack includes a new ultra hard Grounded Mode for the single-player campaign and four new multiplayer arenas - more details on all of that below.
ORIGINAL STORY 16/4/14 5.40pm: The Last of Us' third and final set of DLC, the Grounded Bundle, has been detailed.
On the single-player side, it adds the all new uber-hard difficulty tier, Grounded Mode. "Grounded Mode will be the hardest challenge you'll ever face as you try to complete the single-player campaign of The Last of Us," said Naughty Dog community strategist Eric Monacelli on the PlayStation Blog. "The AI is relentless, smart, and brutal, and survival will be near impossible. 'Completed Grounded Mode' might be one of the most difficult Trophies you'll ever earn."
Grounded Mode can be purchased à la carte for $4.99 (about £3).
As far as multiplayer goes, there's the all new Reclaimed Territories Map Pack, which features four new stages: Wharf, Capitol, Coal Mine, and Water Tower. Wharf is set in the area where players first encounter Robert in the single-player campaign, Capitol is a Boston-based mix of indoor and outdoor combat, Coal Mine is a snowy open map set in Colorado, and Water Tower is a relatively tight outdoor map based in Philadelphia. The Reclaimed Territories Map Pack is priced at $9.99 standalone (about £6).
There's also a new batch of weapons players can purchase for $5.99 (about £3.50) in the Survivalist Weapon Bundle. This comes with four new weapons, including a silenced assault rifle, double-barrel shotgun, the highly accurate "Enforcer" pistol, and a grenade launcher.
Furthermore, players can buy a couple of add-ons that bring new skills to the mix with the Situational Survival Skills Bundle and Professional Survival Skills Bundle, each priced at $3.99 (about £2.50). The former comes with Agility, which lets you climb, vault and move faster; Awareness, a perk that makes enemy nametags appear earlier and stay visible longer when engaged in combat; Fortitude, a skill that gives you more mobility and health when bleeding out; and Scavanger, which increases your chance of getting items from downed foes.
Professional Survival Skills Bundle comes with its own set of four perks. Gunslinger allows you to respawn with more ammo; Bomb Expert makes you immune to your own smoke bombs and lets you set explosives off easier; Executioner gives you bonus shivs every time you craft one and rewards special executions; and Damage Marker makes it so you automatically mark any target you hit and get double XP for doing so.
If you're not into paid DLC, there is one small freebie everyone is getting: the Full-Auto Rifle. As the name implies, it's a fully automatic modified burst rifle that's touted as being a good starter weapon for new recruits.
Players can receive all of the above DLC along with the stellar Left Behind expansion and the first multiplayer add-on, Abandoned Territories, for $19.99 (about £12) in the Season Pass for the next four weeks - resulting in an 80 per cent savings over buying everything à la carte. After the week of 13th May the Season Pass will be discontinued, though all the DLC will be included in The Last of Us' remastered PS4 release due this summer.